<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>超链接样式</title>
    <style type="text/css">
        /* 超链接伪类 必须按照下面的顺序进行设置
        01.a:link: 未访问的链接
        02.a:visited: 点击已经访问后的链接
        03.a:hover: 鼠标悬停的链接
        04.a:active: 鼠标单击未释放的链接
        */
        a:visited{
            color: yellowgreen;
        }
        a:hover{
            color: orange;
        }
        a:active{
            color: deeppink;
        }
        #haha:hover{
            text-decoration: none;
        }
    </style>
</head>
<body>
    <a href="#" id="haha">超链接1</a>
    <a href="#">超链接2</a>
</body>
</html>